Short message service (SMS) over SGs

摘要

A short message service (SMS) over SGs solution comprising an SGs application part (SGsAP) gateway. The SGsAP gateway is positioned between a mobile management entity (MME) on a long term evolution (LTE) network and a short message service center (SMSC)/home location register (HLR) on a circuit-switched (CS) network to permit SMS messages to be passed between the two domains. The SGsAP gateway performs centralized routing to home public land mobile networks (HPLMN) on the circuit-switched (CS) domain. An SGs interface is used to route messages between an SGsAP gateway and a mobile management entity (MME) on a long term evolution (LTE) network. The inventive solution does not require CS networks to support an SGs interface. In accordance with the principles of the present invention, a mobile management entity (MME) need only maintain a single SCTP association to a SGsAP gateway.

主权项

1. A method to provide SMS over SGs via an SGs application part (AP) gateway, comprising:
receiving a short message service (SMS) message over an SGs interface, from a mobile management entity (MME) in a long term evolution (LTE) network; converting said SMS message into a Global System for Mobile communication (GSM) MAP over signaling transport (SIGTRAN) MTP Level 3 User Adaptation layer (M3UA) message; and forwarding said GSM MAP protocol SMS message over a Signaling System No 7 (SS7) interface, to a short message service center (SMSC) in a circuit-switched (CS) network; wherein a mobile device serviced by said long term evolution (LTE) network is enabled to send said SMS message over said SS7 interface to said SMSC without triggering a circuit-switched (CS) fallback.